Question about Samsung LE40R74BDX 40 in. LCD Television
my Samsung 40'' LCD TV turns on and swiches channels, plays sound, but does not show any picture. You can see the background light. But its black all the time. What can be the problem? some electronic in the LCD or could be the LCD panel faulty?
Tcon is dead replace it
Tcon module # 400w2c4ltv0.1
Posted on Nov 24, 2013
Try to replace CAPACITORS with value 1000uf 25 volts, replace them with 1000uf and 35 volts, the power supply overcharges the capacitors due to powerpeaks of 29.7volts, the priginal capacitors cant handle those peaks,.. in the menu turn off options dynamic contrast and digital noise filter and all is fine again! it worked on my samsung.
Posted on Apr 04, 2013
I have the same problem i was told by a repairman that samsungs are known for bad psu. and that its expensive to repair
Posted on Feb 05, 2008
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